Chironomus sollicitus Hirvenoja 1962Japanese material described by Yamamoto 1997, on the basis of the adult male only. Some additional data from original description. Coloration: Head brown, antennal pedicel dark brown. Thorax with antepronotum yellow, mesonotum ochreus, scutal vittae dark brown, postnotum dark brown. Legs predominantly yellowish brown, apical part of ta1 and ta2 brown, other tarsi completely brown. Abdomen predominantly brown, anteromedial and lateral portions of TI, posterior margins of TII-VIII pale, genitalia entirely brown. Head: Frontal tubercle small. Palpal proportions (micron) 65 : 80 : 180 : 240 : 370. Clypeus with 33-34 setae, prementum with 1 seta. Thoracic setae – 0-1 lateral antepronotal; acrostichal - 18-23 (8-23); dorsocentral - (32 (25-53)); prealars 5-6 (5-9); supraalar – 1 (0-2); scutella 33-34 (29-55) irregularly triserial. Leg lengths and proportions (micron):
Anal point long and slender, slightly expanded posteriorly and bill-like in lateral view, Superior volsella of S-type of Strenzke (1959) with 7-9 setae on the base. Inferior volsella long, straight, nearly parallel-sided, extending to tip of anal point, with about 20 recurved setae on apical half, some of which are forked near the tip. Female: Japanese specimens not known, data from European specimens of Hirvenoja (1962). Found: JAPAN - Koshunai, Bibai, Hokkaido; Noboribetsu Hot Spr. (42.29°N, 141.08°E), Hokkaido (BOLD & GenBank). |